diff --git a/requirements-dev.txt b/requirements-dev.txt
index a689e78e..33f1a2be 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -3,4 +3,5 @@ codecov==2.1.9
 requests==2.24.0
 flake8==3.8.3
 wheel==0.35.1
-requests==2.24.0
\ No newline at end of file
+requests==2.24.0
+urllib3>=1.26.19 # not directly required, pinned by Snyk to avoid a vulnerability
\ No newline at end of file